A selection of images from the Library of Congress found via the always excellent Ptak Science Books blog. The daguerreotype, invented by Louis-Jacques-Mandé Daguerre in 1837, was the first commercially successful photographic process and was popular throughout the mid-19th century. Daguerreotype portraits were made by the model posing (often with head fixed in place with a clamp to keep it still the few minutes required) before an exposed light-sensitive silvered copper plate, which was then developed by mercury fumes and fixed with salts. This fixing however was far from permanent – like the people they captured the images too were subject to change and decay. They were extremely sensitive to scratches, dust, hair, etc, and particularly the rubbing of the glass cover if the glue holding it in place deteriorated. As well as rubbing, the glass itself can also deteriorate and bubbles of solvent explode upon the image. The daguerreotypes below are from the studio of Matthew Brady, one of the most celebrated 19th century American photographers, best known for his portraits of celebrities and his documentation of the American Civil War which earned him the title of “father of photojournalism”. The Library of Congress received the majority of the Brady daguerreotypes as a gift from the Army War College in 1920.
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Selection from a set of 30 lithographs by the Russian painter Issachar Ber Ryback, dating mostly from 1917 and published in a book in 1922, depicting scenes of Ryback's home village in Ukraine before it was destroyed in the pogroms following World War I. …Continued
Highlights from the illustrations in the 1665 edition of Fortunio Liceti’s De Monstris, originally published, without the illustrations, in 1616. Liceti’s work, although not the first on the topic of deformities in nature, was perhaps the most influential of the period. In the wake of the book there was a …Continued